Comte is a doctrine that summarizes through its Law of the Three Stages, marking the beginning of the Historicidad of the Human Knowledge. I finish Positivismo was used for the first time by Auguste Comte, however, some of the positivistas concepts can be persecuted clearly from Hume, Kant and Saint-Simon. The general concept of the debate with respect to the Positivismo has been that this one does not admit scientifically like valid other knowledge, but those that come from the experience. The fact is the unique scientific reality and the experience and the induction the exclusive methods of Science. It privileges the experimental and statistical method like element that guarantees the pick up of the reality of a pure form, excluding the participation of the subjectivity of the scientist. What one does not attract by the senses, that is not tangible, it would be to make Metaphysical. conceives to neutral science, when eliminating the subjectivity, being the ideal scientist the one that does without its humanity. Like more distinguishing characteristics of the Positivismo, there are outstanding the assumption of the rationality, the attempt to measure everything, the data like principle expression really scientist, the experimentation like unique judge, with a clear pragmatic direction.
Like central idea that science must use the theories like instruments to predict observable phenomena and resigning to look for explanations. The possibility is only considered of studying the facts, the phenomena, the data scientifically experimentable, the observable thing, the verifiable thing, in an attempt of definition of the possible most objective way, independent of the subjectivity of the investigators, of the psycho-social origins and conditions, using at any moment the verification in the experience and the observation of the phenomena. This conception expanded towards all the branches of the knowledge, including towards the social facts that also they are tried like things. With regard to Psychology, one of its majors problems, in as much particular discipline that it lacks a natural and own object, unanimous or has been accepted at least mainly.